Question

A company makes plastic beach balls with a radius of 2 inches. How many square inches of plastic does the company

Answer 1

Answer:

$A=502.4\ \text{inches}^2$

Step-by-step explanation:

The radius of the ball, r = 2 inches

We need to find how many square inches of plastic does the company  need to make 10 beach balls.

Let A be the area of 1 ball. Balls are in the form of spheres. The area of a sphere is given by :

$A=4\pi r^2$

For 10 balls,

$A=10\times 4\pi r^2\\\\=10\times 4 \times 3.14\times (2)^2\\\\=502.4\ \text{inches}^2$

Hence, the area of 10 beach balls is $502.4\ \text{inches}^2$.